<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Models\Barang;
use App\Models\Pesanan;
use App\Models\Transaksi;
use App\Models\User;
use Carbon\Carbon;
use Illuminate\Support\Facades\DB;
use Barryvdh\DomPDF\Facade\Pdf;
use Illuminate\Support\Facades\View;
use Illuminate\Support\Facades\Response;

class LaporanController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth');
        $this->middleware(\App\Http\Middleware\CheckRole::class . ':admin');
    }

    public function index()
    {
        $totalPendapatanBulanIni = Transaksi::where('status', 'completed')
            ->whereMonth('created_at', Carbon::now()->month)
            ->whereYear('created_at', Carbon::now()->year)
            ->sum('total_pembayaran');

        $totalPendapatanTahunIni = Transaksi::where('status', 'completed')
            ->whereYear('created_at', Carbon::now()->year)
            ->sum('total_pembayaran');

        $totalPesananBulanIni = Pesanan::whereMonth('created_at', Carbon::now()->month)
            ->whereYear('created_at', Carbon::now()->year)
            ->count();

        $totalPelanggan = User::where('role', 'customer')->count();

        return view('admin.laporan.index', compact(
            'totalPendapatanBulanIni',
            'totalPendapatanTahunIni',
            'totalPesananBulanIni',
            'totalPelanggan'
        ));
    }
    
    public function generate(Request $request)
    {
        $jenis = $request->input('jenis', 'transaksi');
        $periode = $request->input('periode', 'bulan-ini');
        $tanggalMulai = $request->has('tanggal_mulai') ? $request->input('tanggal_mulai') : null;
        $tanggalSelesai = $request->has('tanggal_selesai') ? $request->input('tanggal_selesai') : null;
        
        // Menentukan range tanggal berdasarkan periode
        switch ($periode) {
            case 'hari-ini':
                $startDate = Carbon::today();
                $endDate = Carbon::today()->endOfDay();
                break;
            case 'minggu-ini':
                $startDate = Carbon::now()->startOfWeek();
                $endDate = Carbon::now()->endOfWeek();
                break;
            case 'bulan-ini':
                $startDate = Carbon::now()->startOfMonth();
                $endDate = Carbon::now()->endOfMonth();
                break;
            case 'custom':
                $startDate = $tanggalMulai ? Carbon::parse($tanggalMulai) : Carbon::now()->startOfMonth();
                $endDate = $tanggalSelesai ? Carbon::parse($tanggalSelesai)->endOfDay() : Carbon::now()->endOfMonth();
                break;
            default:
                $startDate = Carbon::now()->startOfMonth();
                $endDate = Carbon::now()->endOfMonth();
        }
        
        if ($jenis == 'transaksi') {
            $data = Transaksi::with(['user', 'pesanan.barang'])
                ->whereBetween('created_at', [$startDate, $endDate])
                ->where('status', 'dibayar')
                ->latest()
                ->get();
                
            $totalPendapatan = $data->where('status', 'dibayar')->sum('total_pembayaran');
            $totalTransaksi = $data->count();
            $statusTransaksi = [
                'pending' => $data->where('status', 'pending')->count(),
                'paid' => $data->where('status', 'paid')->count(),
                'completed' => $data->where('status', 'completed')->count(),
                'cancelled' => $data->where('status', 'cancelled')->count(),
            ];
            
            return view('admin.laporan.generate', compact(
                'data', 
                'jenis', 
                'periode', 
                'startDate', 
                'endDate', 
                'totalPendapatan', 
                'totalTransaksi', 
                'statusTransaksi'
            ));
        } else {
            // Laporan Barang
            $data = Barang::withCount(['pesanan' => function ($query) use ($startDate, $endDate) {
                    $query->whereBetween('created_at', [$startDate, $endDate])
                          ->where('status', '!=', 'cancelled');
                }])
                ->orderByDesc('pesanan_count')
                ->get();
                
            $totalBarang = $data->count();
            $totalTerjual = $data->sum('pesanan_count');
            $totalNilai = $data->sum(function($item) {
                return $item->pesanan_count * $item->harga;
            });
            
            return view('admin.laporan.generate', compact(
                'data', 
                'jenis', 
                'periode', 
                'startDate', 
                'endDate', 
                'totalBarang', 
                'totalTerjual', 
                'totalNilai'
            ));
        }
    }

    public function penjualan(Request $request)
    {
        $tahun = $request->input('tahun', Carbon::now()->year);
        $bulan = $request->input('bulan', Carbon::now()->month);

        $transaksi = Transaksi::where('status', 'completed')
            ->when($bulan !== 'all', function ($query) use ($bulan) {
                return $query->whereMonth('created_at', $bulan);
            })
            ->when($tahun, function ($query) use ($tahun) {
                return $query->whereYear('created_at', $tahun);
            })
            ->with(['user', 'pesanan'])
            ->latest()
            ->get();

        $pendapatanPerHari = Transaksi::where('status', 'completed')
            ->when($bulan !== 'all', function ($query) use ($bulan) {
                return $query->whereMonth('created_at', $bulan);
            })
            ->when($tahun, function ($query) use ($tahun) {
                return $query->whereYear('created_at', $tahun);
            })
            ->select(DB::raw('DATE(created_at) as tanggal'), DB::raw('SUM(total_pembayaran) as total'))
            ->groupBy('tanggal')
            ->orderBy('tanggal')
            ->get();

        return view('admin.laporan.penjualan', compact('transaksi', 'pendapatanPerHari', 'tahun', 'bulan'));
    }

    public function stok()
    {
        $barang = Barang::orderBy('stok')->get();
        
        $kategoriCount = Barang::select('kategori', DB::raw('count(*) as total'))
            ->groupBy('kategori')
            ->orderBy('total', 'desc')
            ->get();
            
        return view('admin.laporan.stok', compact('barang', 'kategoriCount'));
    }

    public function transaksi(Request $request)
    {
        $status = $request->input('status', 'all');
        $startDate = $request->input('start_date');
        $endDate = $request->input('end_date');

        $transaksi = Transaksi::with(['user', 'pesanan'])
            ->when($status !== 'all', function ($query) use ($status) {
                return $query->where('status', $status);
            })
            ->when($startDate, function ($query) use ($startDate) {
                return $query->whereDate('created_at', '>=', $startDate);
            })
            ->when($endDate, function ($query) use ($endDate) {
                return $query->whereDate('created_at', '<=', $endDate);
            })
            ->latest()
            ->get();
            
        $statusCount = [
            'pending' => Transaksi::where('status', 'pending')->count(),
            'paid' => Transaksi::where('status', 'paid')->count(),
            'completed' => Transaksi::where('status', 'completed')->count(),
            'cancelled' => Transaksi::where('status', 'cancelled')->count(),
        ];

        return view('admin.laporan.transaksi', compact('transaksi', 'statusCount', 'status', 'startDate', 'endDate'));
    }

    public function download(Request $request)
    {
        $jenis = $request->input('jenis', 'transaksi');
        $tanggal_mulai = $request->input('tanggal_mulai');
        $tanggal_selesai = $request->input('tanggal_selesai');
        
        $startDate = Carbon::parse($tanggal_mulai);
        $endDate = Carbon::parse($tanggal_selesai)->endOfDay();
        
        if ($jenis == 'transaksi') {
            $data = Transaksi::with(['user', 'pesanan.barang'])
                ->whereBetween('created_at', [$startDate, $endDate])
                ->where('status', 'dibayar')
                ->latest()
                ->get();
                
            $totalPendapatan = $data->where('status', 'dibayar')->sum('total_pembayaran');
            $totalTransaksi = $data->count();
            
            $filename = 'laporan_' . $jenis . '_' . $startDate->format('dmY') . '_' . $endDate->format('dmY') . '.html';
            
            return response()
                ->view('admin.laporan.pdf', compact(
                    'jenis', 
                    'tanggal_mulai', 
                    'tanggal_selesai', 
                    'transaksi',
                    'totalPendapatan',
                    'totalTransaksi'
                ))
                ->header('Content-Type', 'text/html')
                ->header('Content-Disposition', 'attachment; filename="' . $filename . '"');
        } else {
            // Laporan Barang
            $barang = Barang::withCount(['pesanan' => function ($query) use ($startDate, $endDate) {
                    $query->whereBetween('created_at', [$startDate, $endDate]);
                }])
                ->orderByDesc('pesanan_count')
                ->get();
                
            $filename = 'laporan_' . $jenis . '_' . $startDate->format('dmY') . '_' . $endDate->format('dmY') . '.html';
            
            return response()
                ->view('admin.laporan.pdf', compact(
                    'jenis', 
                    'tanggal_mulai', 
                    'tanggal_selesai', 
                    'barang'
                ))
                ->header('Content-Type', 'text/html')
                ->header('Content-Disposition', 'attachment; filename="' . $filename . '"');
        }
    }
}